Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Costco (COST) upgraded to Buy from Hold at Edward Jones. 2. U.S. Steel (X) and Commercial Metals (CMC) were upgraded to Buy from Hold at Jefferies. 3. Sysco (SYY) upgraded to Equal Weight from Underweight at Barclays with analyst Karen Short citing greater confidence in the company's three-year plan following its first quarter results. 4. Lockheed Martin (LMT) upgraded to Buy from Hold at Deutsche Bank with analyst Myles Walton saying 2016 should be the first year of positive defense spending outlays since 2010 after the Republicans retained control of Congress and added the White House. 5. McKesson (MCK) upgraded to Buy from Neutral at Mizuho with analyst Ann Hynes saying she believes rhetoric on drug pricing will now "diminish significantly" following Donald Trump's presidential victory. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.

Deutsche Bank raised the firm's price target on Lockheed Martin to $487 from $467 and keeps a Hold rating on the shares. The company reported solid Q1 results, the analyst tells investors in a research note. The firm says that while the Street mis-modeling the extra week played a part in this quarter's outperformance versus sell-side estimates, "there were also pockets of fundamental outperformance." It sees upside to full-year sales estimates.